RF rising falling edge

[visionpro]

Hi, I wonder if anyone can help me with some info on the timing of the rising/falling edge timing of rf.
This is in regard to RF for model RC vehicules. I recently had an interference problem with a radio controlled car. This was while showing the car to a friends son.
My friend, an electronics professional is intrigued by what was happening to the timing of the rising/falling edge.
We tried to check this on his oscilloscope, , but were unable to discern accurrately what was going on.
His interest is trying to discern what happens when someone switches on a transmitter on the same freq.
Apologies, if this question is worded poorly, I am not electronics savvy.
I am posting this on behalf of someone else. As he is considering the practicality building me a one off device as a failsafe.
I know these type of failsafe can be purchased.

With thanks
DS.

 

[zachtheterrible]

This sounds perfectly normal to me, unless I am missing something. What I am getting is that you while you were showing the car to your friend's son, you got some interference from another remote/transmitter. Is this a remote for another RC car, a garage door remote . . .?

 

[Nigel Goodwin]

Hi, I wonder if anyone can help me with some info on the timing of the rising/falling edge timing of rf.
This is in regard to RF for model RC vehicules. I recently had an interference problem with a radio controlled car. This was while showing the car to a friends son.
My friend, an electronics professional is intrigued by what was happening to the timing of the rising/falling edge.
We tried to check this on his oscilloscope, , but were unable to discern accurrately what was going on.
His interest is trying to discern what happens when someone switches on a transmitter on the same freq.
Apologies, if this question is worded poorly, I am not electronics savvy.
I am posting this on behalf of someone else. As he is considering the practicality building me a one off device as a failsafe.
I know these type of failsafe can be purchased.

Radio control models work by transmitting variable width pulses which are sent to the servos. All fail safes do is provide a local source of pulses if the radio derived ones are lost - as in being out of range, or interfered with enough to lose them.

They are usually used in RC planes, so that it doesn't disappear into the distance - when the radio pulses are lost the fail safe will put the plane into a circle so it spirals down.

They are not normally used in cars.

 

[visionpro]

FR signal

Thanks for the reply.
I'll try to clarify. I knew I made it a clumsy question.
What happened was that my car (actually a monster truck) ranaway due to a loose crystal. This started us talking, and I mentioned the regular accurance of runaways at the track I race at. There are numerous causes. One of them being when someone turns on a transmitter on the same frequency. This, in a perfect world does'nt happen. But the place I race, on the tar, caters for a lot of newbies.
We also have monster trucks, originally as a novelty. But is very popular now, partly due to how spectacular they are. And failsafes are very common on the cars in Austalia. But most don't protect against a second signal.
So one of the problems is when a second transmitter, is turned on. Is loss of control of the vehicule.
So we set up a test with two transmitters on the same channel as my rc car.
Then the servo of my car was connected to an oscilloscope. And while a change in signal was detected, my friend could not discern exactly what was happening to the signal.
He asked that I try to find out, what the failsafes, that do have this function look for.
He is looking I think for the timing of the rising/falling of the signal. To see what changes.

Des